EP0358440A2 - Imitationsschiefer - Google Patents

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Publication number
EP0358440A2
EP0358440A2 EP19890308960 EP89308960A EP0358440A2 EP 0358440 A2 EP0358440 A2 EP 0358440A2 EP 19890308960 EP19890308960 EP 19890308960 EP 89308960 A EP89308960 A EP 89308960A EP 0358440 A2 EP0358440 A2 EP 0358440A2
Authority
EP
European Patent Office
Prior art keywords
mix
settable
mould
high density
mixer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19890308960
Other languages
English (en)
French (fr)
Inventor
Paul Francis Johnson
David John Owers
Joseph Noel Linton
Hugh Morgan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
DURACRETE INDUSTRIES Ltd
Original Assignee
DURACRETE INDUSTRIES Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by DURACRETE INDUSTRIES Ltd filed Critical DURACRETE INDUSTRIES Ltd
Publication of EP0358440A2 publication Critical patent/EP0358440A2/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
    • B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
    • B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
    • C04B2111/00301—Non-porous materials, e.g. macro-defect free [MDF] products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/54—Substitutes for natural stone, artistic materials or the like
    • C04B2111/542—Artificial natural stone

Definitions

  • the invention relates to a method and apparatus for manufacturing a high density cementitious material usable as an alternative building or paving material.
  • a problem with the existing products is that although they may produce hard wearing products they do not have an aesthetic appearance and texture similar to that of natural stone building or paving materials.
  • An object of the invention is therefore to provide a method and apparatus for producing a high density cementitious material usable as a substitute for existing building or paving materials.
  • a method of producing a high density cementitious material including the steps of: forming a settable mix from water, aggregate, sand, plasticizer, pigment, polymer and portland cement mixed in a high shear mixer to produce a completely homogeneous slurry; mixing into the slurry a defoamer; pouring and/or injecting the settable mix into a mould; vibrating the mix and/or the mould at a high frequency; and allowing the settable mix to cure thereby forming a building or paving material.
  • an apparatus for producing a high density cementitious material including means for forming a settable mix from water, aggregate, sand, plasticizer, pigment, polymer and portland cement; mixing the settable mix in a high mixer to produce a homogeneous slurry; means for adding to the slurry a defoamer; apparatus for feeding the settable mix into a mould; means for vibrating the mixture or mould at a high frequency; means for storing the settable mix while it cures to form a building or paving material.
  • the means for storing the settable mix can include means for applying controllable heat to the mix to improve curing of the mix.
  • a high density cementitious material produced in accordance with either the method or apparatus according to the present invention.
  • EXAMPLE 1 Material Amount by Weight as a %age Aggregate-Pavroc washed AP5CR100 less 1mm 1300.0Kg 46.3 Aggregate-Washed black sand less 1mm 450.0 16.08 Elkem microsilica, 5.0 0.17 Elkem super plasticizer 0.5 0.01 Pigment-Black Oxide,Bayer 318 44.0 1.56 Polymer-MC76,RHOM & HAAS, 48% 35.0 1.24 Super Plastisizer-Mighty 150,Kao Chemicals 26.0 .92 Defoam agent, Foamaster NXZ, Chemby Chemicals 2.6 .09 Accelerator-Daraset, Grace NZ 8.7 .30 Cement, Milburn rapid hardening 656.0 23.36 Water 280.0 9.97 EXAMPLE 2 Material Amount by Weight as a %age per 100/tiles Aggregate-crushed Graywacke washed S.E.
  • the method according to the present invention requires the chemicals to be mixed in a high shear mixer an example of which is shown in Figure 1, after the ingredients are first blended.
  • the blended chemicals, the black oxide and aggregate, are then added the ingredients are mixed and during this stage Portland cement is added to the mixer 1 ( Figure 1).
  • the sand is also introduced followed by the correct amount of water. This water level varies according to the dampness of the aggregate.
  • the aggregate moisture can be determined by weighing and drying a sample of the aggregate after thorough mixing of the batch. It is essential not to exceed the water proportion, by weight, in the above formula or a sloppy difficult to handle mix.
  • the homogenous slurry is then mixed in the pan type mixer 1 for approximately a further ten minutes.
  • the mixer 1 is mounted on a frame 2 which can be portable or movable as required.
  • the mixer 1 has a paddle mixing device 3 which in Figure 1 is shown in its down or mixing position.
  • the device 3 is mounted on a pivotable arm 4 pivotally mounted at 5 to one end of the frame 2.
  • the arm 4 may be raised by hydraulic ram 6 to assist in loading or emptying of material from the mixer 1.
  • the mixer 1 is advantageously driven by a hydraulic motor 7 mounted beneath the mixer 1 and controllable so that the speed of rotation of the mixer 1 can be modified if desired by processing requirements.
  • the mixer 1 is mounted so that it can be pivoted by hydraulic ram 8 about the transverse bar 9 to empty the mixed material to the next processing stage.
  • the material from mixer 1 can for example be untouched unto a hopper 10 ( Figure 2) which is kept vibrating to maintain the quality and consistency of the mix.
  • the mix produced is then injected into a shallow mould 11 the bottom 12 of which has a surface texture corresponding to that of the slate or the like material to be produced.
  • the textured surface 12 of the mould can be produced by taking a casting or castings of a piece of natural slate.
  • the shallow mould or the mix is vibrated using, preferably, high frequency vibration (advantageously about 70hz). This vibration step is necessary in order to distribute the mix and to eliminate all entrapped air.
  • the shallow mould 11 is supported on a vibrating table 13 shown in Figures 2 and 3.
  • an end 14 of the table 13 has mounted in associated therewith a frame 15 which supports the hopper 10.
  • the hopper 10 is maintained vibrating or oscillating by vibrating means 16 on the side thereof.
  • the hopper 10 has at its lower end a chute 17 with a hydraulically operated opening mechanism 18 passed which a predetermined volume of mix, for example 2kg, for each tile is forced into the mould 11.
  • the table 13 is mounted on a base 19 via rubber bearings 20.
  • the table 13 has therein up to 15 moulds 11 which move sequentially from end 14 to end 21.
  • the table 13 is divided into two sections which are vibrated at different rates.
  • the second or output table 22 being a finishing stage before the tiles are passed to a curing room.
  • the vibration of the initial table 13 is at a low frequency i.e. up to 50 hz and the tiles are on this table for about 3 to 5 minutes.
  • the tiles are on the output table 2 for 30 seconds and this is vibrated at a higher frequency, for example 65-70 hz.
  • the mix is allowed to cure in a curing chamber and the curing time is selected according to the ambient temperature and, for example, can be as follows: Temperature Time Firstly 40 °C 4 hours Then 22 °C 14 hours
  • the humidity must be within about 90%. After initial curing the slates are de-moulded and crated for 28 days.
  • the formula may include as required by end users colouring pigments to thereby produce a cementitious product of a variety of colours and tonings.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)
EP19890308960 1988-09-05 1989-09-05 Imitationsschiefer Withdrawn EP0358440A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NZ22604688 1988-09-05
NZ226046 1988-09-05

Publications (1)

Publication Number Publication Date
EP0358440A2 true EP0358440A2 (de) 1990-03-14

Family

ID=19922577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890308960 Withdrawn EP0358440A2 (de) 1988-09-05 1989-09-05 Imitationsschiefer

Country Status (3)

Country Link
EP (1) EP0358440A2 (de)
JP (1) JPH02192915A (de)
AU (1) AU4105089A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417064A3 (en) * 1989-09-06 1992-02-26 Asamer & Gross Transportbeton Gesellschaft M.B.H. Building element, process for its fabrication, mixture as well as cement for the fabrication of this mixture and this element
FR2709305A1 (fr) * 1993-08-27 1995-03-03 Batiment Regional Matériau composite substitut du marbre et du granit.
US20100225023A1 (en) * 2007-07-23 2010-09-09 S.A.C.M.E. Spa Machine and method to produce structural elements for the building trade made of cement material, having one or more polymer material inserts
CN113103398A (zh) * 2021-04-08 2021-07-13 李云松 一种机制砂预应力混凝土制备方法
CN113290682A (zh) * 2021-06-02 2021-08-24 新昌县益旭龙机械科技有限公司 建筑工程水泥定量输出装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU662819B2 (en) * 1992-06-12 1995-09-14 Bps Tech-Con Pty. Ltd. Method moulding decorative facing products

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0417064A3 (en) * 1989-09-06 1992-02-26 Asamer & Gross Transportbeton Gesellschaft M.B.H. Building element, process for its fabrication, mixture as well as cement for the fabrication of this mixture and this element
FR2709305A1 (fr) * 1993-08-27 1995-03-03 Batiment Regional Matériau composite substitut du marbre et du granit.
US20100225023A1 (en) * 2007-07-23 2010-09-09 S.A.C.M.E. Spa Machine and method to produce structural elements for the building trade made of cement material, having one or more polymer material inserts
US8801422B2 (en) * 2007-07-23 2014-08-12 S.A.C.M.E. Srl Machine and method to produce structural elements for the building trade made of cement material, having one or more polymer material inserts
CN113103398A (zh) * 2021-04-08 2021-07-13 李云松 一种机制砂预应力混凝土制备方法
CN113103398B (zh) * 2021-04-08 2022-06-21 福建宏盛建设集团有限公司 一种机制砂预应力混凝土制备方法
CN113290682A (zh) * 2021-06-02 2021-08-24 新昌县益旭龙机械科技有限公司 建筑工程水泥定量输出装置

Also Published As

Publication number Publication date
AU4105089A (en) 1990-03-08
JPH02192915A (ja) 1990-07-30

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